Respuesta :

MissPhiladelphia
The value of a can be determined using the distance formula: distance = square root of { (x2-x1)^2 + (y2-y1)^2 }. Given point 1 as (a, -9) and point 1 as (3, 24) and the distance as 29 units, the value of a was calculated to be equal to 11. 
JoseAviles

The answer was C) 11 make me the brainlist please